Patents by Inventor Diane Z. Lehder

Diane Z. Lehder has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5890069
    Abstract: A cordless telephone system is arranged for extending the operating range of a cordless telephone portable unit within such system. The cordless telephone system comprises a plurality of cordless telephone stations that are connected to a plurality of intrapremises telephone wire-pairs and support independent simultaneous telephone calls without interference. Each cordless telephone station consists of a cordless telephone base unit and its associated cordless telephone portable unit. Although each of the portable units is associated with a particular base unit, all of the portable units are able to operate with any of the base units in the system. As a user of a portable unit with a call in progress roams about a premises, all base units monitor the quality of the radio frequency signal received from the portable unit.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: March 30, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: James Gifford Evans, Diane Z. Lehder, Gregory Panagopoulos
  • Patent number: 5513248
    Abstract: A cordless telephone system is arranged for extending the operating range of a cordless telephone portable unit within such system. The cordless telephone system comprises a plurality of cordless telephone stations that plug into any available wall telephone jack and may share the intrapremises telephone wire-pair with one or more existing corded telephone stations without interference. Each cordless telephone station consists of a cordless telephone base unit and its associated cordless telephone portable unit. Although each of the portable units is associated with a particular base unit, all of the portable units are able to operate with any of the base units in the system. As a user of a portable unit with a call in progress roams about a premises, all base units monitor the quality of the radio frequency signal received from the portable unit.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: April 30, 1996
    Assignee: AT&T Corp.
    Inventors: James G. Evans, Diane Z. Lehder, Gregory Panagopoulos